The utility model relates to the technical field of household products for infants, and discloses a locking indication mechanism and a table-side dining chair with the locking indication mechanism. The locking indication mechanism comprises a body; one end of the lower supporting piece is rotationally connected with the body, a jacking
assembly is installed at the other end of the lower supporting piece, the jacking
assembly and the body are suitable for being clamped and fixed to the two faces, opposite to the to-be-installed piece, of the body respectively, an indicating piece is slidably installed in the lower supporting piece, and the indicating piece is connected with the jacking
assembly through a connecting piece; and one end of the jacking bias pressure piece is fixedly connected with the lower supporting piece, the other end of the jacking bias pressure piece is connected with the jacking assembly in a matched mode, and the jacking bias pressure piece is suitable for applying bias pressure to the jacking assembly to move away from the end of the lower supporting piece. Whether the jacking assembly and the body are clamped with the to-be-installed piece in a matched mode or not is indicated through the indicating piece, the infant table-side dining chair is installed on the infant table-side dining chair, it can be avoided that an infant is placed on the table-side dining chair in an unclamped state, and the accident that the infant falls off from a table body along with the table-side dining chair is avoided.